Boiler with superheater



J; A. BARNES BOILER WITH SUPERHEATER Filed Feb. 1'7, 1919 I 2Shasta-"$116611 l u a/m/ A. 5/1 m/Es'. 3mm

I May 8, 1923.

JZA.BARNES BOILEF. WI TH SUPERHEATER Filed Feb. 17. 1919 2 Sheets-Sheet2 Jomv A. BAR/v5.5. 51mm through the spaces 8. Surrounding heaterheaders 11 and .1 Any suitable means for efiecting this connection willanswer, but preferably one admitting of ready, detachment andreattachment. The ends of the elements are seen to extend them andfilling up the spaces so as to prevent air from leaking in is. thefire-clay or similar material 12. A casing 13, provided with suitabledoor 14, encloses the front.

It may prove desirable in some cases to protect the superhcater elementssomewhat from too direct exposure to the heat from the furnace; and forthis purpose the lowest row of water tubes 1 is otiset. as clearly shownin Figs. 2, 3, ands so as to lie under the elements for the greater partof their len th.

team, superheater source, issupplied to one of the headers ll and 11",circulates through the su erheater elements 10 and is superheated, andis taken ofi from the other headerand carried to the point of use.

either from the boiler inwhich lit will be seen that it it is desired tore more a superheater element for any purpose, this removal is efiectedby merely removing the tire-clay 12, and detaching the element eindsfrom headers 11. and 11*, whereupon the element can be withdrawn.

The same general idea or providing a readily accessible superhcaterspace is applicalole to boilers in which other-respectsis very similarto without departing the front and rear headers are made upof a set ofseparate boxes such as illustrated in Figs. 5 and (5. Alternate of theseboxes are made shorter, ai are, and the superheater elements it) havetheir ends projecting out through the space thus provid d. Theconstructioi'i in i that previously described and need not be elaboratedthe details ol the arrangement may be considerably varied l'Ol'Ilparticular shape of the invention. Thus the elements,the number of theirloops, etc,

the spirit of theine ioo' need not be precisely as shown. The notches 8may evidently be equally well made in the desired they may be madeheaders be located rear header; or if in both. and superlieater at bothends.

These. and similar su gest themselves.

Vhat claim is:-

1., In a boiler, the combination of aheader; a second header oppositethe first, and shorter than it but having a series of spaced downwardextensions making the overall length of the two headers substantiallythis? same; header and its extensions to the first header; and asuperheater con'ipri'sing tubular units located in the spaces betweenthe water-tubes variations will readily connected to the extensions. 1

the-= is located, or from another 2. In a boiler, the combination ofaheader; a second header opposite the first and shorter than itbuthaving a series of spacel downward extensions making the overalllength of the two headers the same; water tubes connecting the secondheader and its extensionsto the first header, and a superheatercomprising tubular units located in the spaces between the'water tubesconnected to the extensions, the ends of the units exthe water tubesconnected to the extensions;

and a super-heater header adjacent to the second header on tlieeide awayfrom the water tubes and out of line with the superwaterv tubesconnecting the second heater units, the ends of the units projectingthrough the spaees between the extensions and iWHlQj bent toward andsecured. "to the header.

- JQHN BARNES.

